Health Topics A-Z

Attention-deficit/hyperactivity disorder (ADHD) is a developmental disorder marked by persistent patterns of inattention, hyperactivity, and impulsivity that can interfere with daily functioning and development.

Autism spectrum disorder (ASD) is a neurological and developmental disorder that affects how people interact with others, communicate, learn, and behave. Although autism can be a lifelong disorder, treatments, services, and support can improve a person’s health, well-being, and daily functioning.

A balance disorder is a condition that makes you feel unsteady or dizzy.

Bell’s palsy is a neurological disorder that causes sudden weakness or paralysis on one side of the face. It is the most common cause of facial paralysis and results from a problem with the facial nerve, a nerve that controls movement in the face.

Bipolar disorder is a serious mental illness that causes extreme mood changes, from periods of extreme elation or irritability and high energy and activity to periods of low energy and activity, as well as impairments in usual functioning.

Bladder cancer occurs when cancer cells form in the tissues of the bladder. The most common type is urothelial carcinoma, which begins in cells that line the inside of the bladder.

Bleeding disorders are health conditions that affect the way the body controls blood clotting. If blood does not clot enough, the body may have problems with bleeding too much after an injury or surgery.

Borderline personality disorder is a mental illness that impacts a person’s ability to regulate their emotions, but effective treatments are available to manage symptoms.

Brain cancer occurs when cancer cells form in the tissues of the brain. There are several types of brain cancer, and treatment depends on the type, location, and other factors.

Breast cancer is the second most common cancer in women after skin cancer. Mammograms can detect breast cancer early, possibly before it has spread.